Bolt-cutter.



' UNITED STATES PATENT Ormes.

ARTHUR L. MOORE, OF SPRINGFIELD, MASSACHUSETTS.

BOLT-CUTTER.

SPECIFICATION forming part of Letters Patent No. 720,835, dated February17, 1903. Application filed September 23, 1902. Serial No. 124,542. (Nomodel.)

To @ZZ whom, t 1v1/tty concern,.-

Be it known that I, ARTHUR L. MOORE, a citizen of the United States ofAmerica, and a resident of Springfield, in the county of Hampden andState of Massachusetts, have invented certain new and usefulImprovements in Bolt-Cutters, of which the following is a full, clear,and exact description.

This invention relates to improvements in eral class of bolt-cutters iscommon and Well' known, and the present improvements relate particularlyto the combination,with the handle-levers and the cutter-carryinglevers, of the adjusting-levers and the means for effecting theadjustment thereof and maintaining them when adjusted against accidentaldisplacement or derangement; and the object of the improvements relatingto the portion of the implement mentioned is to provide theadjusting-lever appliance in and as a part of the bolt-cutter for itsentirely efcient utilization in a manner of unusualsimplicity, involvinga minimum of parts, permitting the construction of the partspracticablyand with inexpensive mechanical operations, permitting anarrangement which is direct, so that the assemblage is easy, as is alsothe replacement of a part should occasion therefor arise, and wherebythe adjusting operations are not only most easily and quickly performed,but the adjusting-lever when brought to any position of adjustment willbe held thereat by the abutment thereagainst of adjustingscrews bearingin opposite directions at sides oppositely disposed in relation to thepoint of pivotal connection of the adjusting-lever to and upon thehandle-lever; and the invention consists in a bolt-cutter havingcombined therein,with the handle-levers and the cutterlevers, theadjusting-levers, with the means for effecting and holding such leversin their adjustments, all substantially as hereinafter particularlydescribed in connection with the accompanying drawings and as specifiedin the claims.

Reference is to be had in the accompanying drawings, in which- Figure lis a side view of the bolt-cutter, considerable portions of the freeends of the handle-levers being broken off and a portion of one of thehandle-levers being drawn in longitudinal section. Fig. 2 is a top edgeor plan view of Fig. l. Fig.- 3 is a top edge or plan view of one of thehandle-levers, the adjusting-lever being removed from connectiontherewith. Fig. 4 is a cross-sectional view, 4 L-indicating the line ofsection therefor.

Similar characters of reference indicate corresponding parts in all ofthe views.

In the drawings, AVA represent the handlelevers, pivotally connected attheir forward ends at o., and at the forward end of each handle-lever isan adj listing-lever B, the same being. to Vall intents and purposes inthe operation of the implement as a ilxed and-rigid part of thehandle-lever, and to the forward ends of the adjustinglevers arepivotally connected, at b, the cutter-levers O C, these having thecuttingedges c c at their forward portions, said levers U O beingfulcrumed at d d, the fulcrums being held bya cross-strip D to insurethe opening and closing of the cutter-leversA equally. In thiswell-known form of bolt-cutter the opening of the handie-levers causesthe moving together of the forward ends of the fixed levers B and thepivotal connections l? h, causing' the cutterlevers to swing on thefnlcrums d o7, and the cutting ends c c to open from each other, and ofcourse the closing together of the handlelevers eects the closingtogether of the cutters for their severing action on the protruding endof a bolt.

Each handle-lever A at its forward end portion is constructed ofcross-sectionally outwardly-open trough shape, as indicated at f, and inthe recess thus produced the tongue or ear-lug g is entered with a closelit, the pivotbolt h forming the rocking connection between theadjusting-lever B and the handlelever.

A screw 'i passes with a screw engagement through theportion of theadjusting-lever B IOO which is forward of the pivot h and has its innerend in bearing against the base of the aforesaid recessf, said screwhaving a polygadjusting-lever in its proper adjustment with the greatestrigidity, permitting no lost motion, looseness, or lash.

Should the cutters after considerable use become worn or ground away attheir meeting edges, so that the cutter-carrying levers would requirereadjustment by having the normal positions of their fulcrum connectionsb h approached more or less, it is only necessary to loosen by outwardlyturning the screws i t', whereby the forward ends of theadjusting-levers may be equally swunginwardly in just the proper extent,and then to screw the rearwardly-disposed screwsj j outwardly to a hardbearing against the rear arms of the adjusting-levers.

I am aware that a bolt-cutter of this general class has been constructedwherein the handle-lever has a narrow recess therein in which ispivotally anchored an eyebolt, which protrudes through theadjusting-lever, made in the form of a skeleton frame and pivoted at itsrear end to the handle-lever, having at its forward end anabutment-screw passing therethrough with a screw engagement and having apressure bearing against the outer edge of the handle-lever, theaforementioned eyebolt pivoted in the recess in the handle-lever,protruding through an aperture in the adjusting-lever, and receiving atthe outer edge of the adj usting-lever and at a place quite near to theadjusting abutment-screw a nut; but any such specific construction andarrangement I do not claim; but,

Having thus described myinvention, what I do claim and desire to secureby Letters Patent, is-

1. In a bolt-cutter of the class described in combination, the handlelevers pivotally jointed at their forward ends and having anoutwardly-opening recess to the rear of said pivotal connection, theadjusting-levers each having between its ends an inwardly-extendingear-lug fitting and pivotally connected in said recess of thehandle-lever, a screw applied t-o exert an outwardly-crowding forceagainst the rear arm of the adjusting-lever, and another screw appliedto constitute an abutment between the forward arm of saidadjusting-lever and a forward portion of the handle -lever and theintermediately-fulcrumed cutter-levers having their rear ends pivotallyjointed to the forward ends of the adjusting-levers.

2. In a boltcutter of the character described in combination, thehandle-levers pivotally jointed at their forward ends and having theirforward portions of outwardly-opening trough form, the adjusting-levershaving between their ends, the inwardly-projecting ear-lugs g, fittingwithin the recesses in the handle-levers and pivotally connectedtherein, a screwj screw-threading through each handle-lever to the rearof the adjusting-lever pivot and having its outer end protruding and inbearing against the inner surface of the rear arm of theadjusting-lever, another screw z' screw-engaged through the forward armof the adjusting-lever and having its inner end in abutment against thebase of the recess in the handle-lever, and the intermediately-fulcrumedcutter-levers having their rear ends pivotally jointed to the forwardextremities of the adjusting-levers, substantially as described andshown.

Signed by me at Springfield, Massachusetts, in presence of twosubscribing witnesses.

ARTHUR L. MOORE.

Witnesses:

WM. S. BnLLows, A. V. LEAHY.

